石牙山特长公路隧道施工通风方案设计

来源 :第六届鲁粤辽路桥技术论坛 | 被引量 : 0次 | 上传用户:ybws2006
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  本文主要论述广梧高速公路石牙山隧道由于受到地理条件的限制,在4600m长的隧道中纵坡设置1.81%的单坡,增加了施工阶段的通风难度,介绍广州端往梧州端开挖施工阶段的通风方案进行设计和筛选,以及在使用中的效果.
其他文献
以北京市通州区农药监管为例,分析了全区农产品质量安全监管中存在的问题,结合实际工作,提出相关建议和思路,有效地保障了农产品的质量安全,促进农业增产、农民增收和农村稳
随着我国山区经济的快速发展.山区公路建设日益重要.桥梁作为山区公路的重要组成部分,必须做好设计.本文首先探析了山区重载山区公路桥梁设计,然后探析了在山区重载公路桥梁
Iodine is an important trace element associated closely with human being, and it will influence human's normal growth if lacking it. Meanwhile, iodine is an
The selection and study of descriptive variables of protein-protein complex interface is a major question that many biologists come across when the research of
Using the spherical harmonic (SH) function model and the dual frequency GPS data of 139 International GPS Service (IGS) stations for July 15 of 2000, the global
Hydrothermal clay minerals that formed in the main metallogenic stage of the Changkeng disseminated-type gold deposit in central Guangdong were analyzed by the
A new early angiosperm leaf species is reported from the Xinzhuang Formation in Wuhe County, Anhui Province. It is probably of Barremian or slightly later in ge
To obtain higher accuracy of information concerning boat motion, the use of global positioning system (GPS) real-time kinematic (RTK) technology was investigate
为促进上海融入长江三角洲的发展,细化研究具体的途径问题,通过比较研究和现实分析,提出核心问题是强化上海对周边地区的正溢出效应,集中在三方面将上海潜在的优势转化为正溢
A polyploid hybrid fish with natural gynogenesis can prevent segregation and maintain their hybrid vigor in their progenies. Supposing the reproduction mode of